19890423

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 36492768

約数和(自身を除く): 16602345

約数列:

[1, 3, 7, 9, 21, 23, 37, 49, 53, 63, 69, 111, 147, 159, 161, 207, 259, 333, 371, 441, 477, 483, 777, 851, 1113, 1127, 1219, 1449, 1813, 1961, 2331, 2553, 2597, 3339, 3381, 3657, 5439, 5883, 5957, 7659, 7791, 8533, 10143, 10971, 13727, 16317, 17649, 17871, 23373, 25599, 41181, 41699, 45103, 53613, 59731, 76797, 96089, 123543, 125097, 135309, 179193, 288267, 315721, 375291, 405927, 537579, 864801, 947163, 2210047, 2841489, 6630141, 19890423]

約数ペア:

[(1, 19890423), (3, 6630141), (7, 2841489), (9, 2210047), (21, 947163), (23, 864801), (37, 537579), (49, 405927), (53, 375291), (63, 315721), (69, 288267), (111, 179193), (147, 135309), (159, 125097), (161, 123543), (207, 96089), (259, 76797), (333, 59731), (371, 53613), (441, 45103), (477, 41699), (483, 41181), (777, 25599), (851, 23373), (1113, 17871), (1127, 17649), (1219, 16317), (1449, 13727), (1813, 10971), (1961, 10143), (2331, 8533), (2553, 7791), (2597, 7659), (3339, 5957), (3381, 5883), (3657, 5439)]